Tenive Aerobic Stepper Adjustable Fitness Exercise Step Platform with Risers Ideal for home workout to enhance endurance, strength and improve overall cardiovascular fitness Heavy-duty environmental polypropylene material and advanced injection molding technology Adjustable 4.7'', 6.7'' and 8.7'' in height with risers; Stable and slip-proof even when height rises Non-slip, waterproof and shock absorbing surface for easy cleaning; Stackable for easy storage; Lightweight for transportation Max Capacity: 551.15 lbs; Product Size: 27.6'' x 11'' x 4.7''(L x W x H)